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首页> 外文期刊>International Journal of Heat and Mass Transfer >Unified streamline, heatline and massline methods for the visualization of two-dimensional heat and mass transfer in anisotropic media
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Unified streamline, heatline and massline methods for the visualization of two-dimensional heat and mass transfer in anisotropic media

机译：统一的流线，热线和质量线方法，用于可视化各向异性介质中的二维传热和传质

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摘要

Many of the actual materials are anisotropic, ranging from natural products to the most sophisticated composite materials. Special emphasis needs to be devoted to the heat and mass transfer calculations in anisotropic media, and to the development of visualization tools for the transport phenomena occurring in such media, similarly to what happens with isotropic media. The most adequate tools for visualization purposes are the streamlines, the heatlines and the masslines, when dealing with two-dimensional steady problems without source terms. Moreover, further attention needs to be devoted to the diffusion coefficients for the streamfunction, heatfunction and massfunction, whose contour plots are used for visualization purposes. This is specially important for domains of marked anisotropy or for domains involving media of different properties, or even conjugate diffusion/convection heat and mass transfer problems. Once defined the proper diffusion coefficients, it is proposed a unified physical treatment, as well as a unified treatment to evaluate the function's fields by using the same numerical procedures and code routines as for the primitive conserved variables. The unified approach is illustrated through pure conduction heat transfer problems, natural convection heat transfer in a porous enclosure, and conjugate conduction-convection heat transfer.
机译：从天然产物到最复杂的复合材料，许多实际材料都是各向异性的。与各向异性介质类似，需要特别强调各向异性介质中的传热和传质计算，以及可视化工具的开发，以用于此类介质中发生的传输现象。在没有源项的情况下处理二维稳定问题时，最合适的可视化工具是流线，热线和质量线。此外，还需要进一步关注流函数，热函数和质量函数的扩散系数，它们的等高线图用于可视化目的。这对于具有显着各向异性的区域或涉及具有不同特性的介质的区域，甚至对于共轭扩散/对流传热和传质问题而言，都特别重要。一旦定义了适当的扩散系数，就提出了统一的物理处理方法，以及通过使用与原始守恒变量相同的数值程序和代码例程来评估函数域的统一处理方法。通过纯传导传热问题，多孔外壳中的自然对流传热以及共轭传导-对流传热来说明统一方法。

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